Home / 105,584.97-145,707.25-57,838.30

Finding the Fourth Proportional to 105,584.97, 145,707.25 and 57,838.30

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Solution

The fourth proportional to 105,584.97, 145,707.25 and 57,838.30 is: 79,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,584.97 : 145,707.25 = 57,838.30 : x
  2. Step 2: Convert to fraction form
    105,584.97/145,707.25 = 57,838.30/x
  3. Step 3: Cross multiply
    105,584.97x = 145,707.25 × 57,838.30
  4. Step 4: Simplify right side
    105,584.97x = 8,427,459,857.35
  5. Step 5: Solve for x
    x = 8,427,459,857.35/105,584.97
  6. Step 6: Final answer
    x = 79,816.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.